Sofa



FIG. 1 is a front perspective view of a sofa, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a first side elevational view thereof;

FIG. 4 is a second side elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a front perspective view of the sofa in a second embodiment;

FIG. 8 is a front elevational view thereof;

FIG. 9 is a first side elevational view thereof;

FIG. 10 is a second side elevational view thereof;

FIG. 11 is a rear elevational view thereof; and,

FIG. 12 is a top plan view thereof. 

The ornamental design for a sofa, as shown and described. 